Patents by Inventor Yuki Tojima
Yuki Tojima has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20080093133Abstract: A breather device (400) provided on the outer peripheral section of a case (60) of an in-wheel motor (70) is located at a position above the rotation shaft of the in-wheel motor (70), between the in-wheel motor (70) and a wheel (10). The position is inside the wheel (10) in the width direction of a vehicle.Type: ApplicationFiled: May 16, 2005Publication date: April 24, 2008Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Shigekazu Yogo, Ryoji Mizutani, Yuki Tojima, Shuetsu Suzuki
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Publication number: 20070246277Abstract: An in-wheel motor includes a motor, a shaft, an oil pump and oil paths. The oil pump is provided on one end of the shaft. The motor includes a stator core, stator coils and a rotor. The oil pump pumps up an oil from an oil reservoir via an oil path to supply the pumped-up oil to another oil path. The another oil path supplies the oil from the oil pump to the outer periphery of the stator core of the motor from an opening end.Type: ApplicationFiled: May 2, 2007Publication date: October 25, 2007Applicants: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Ryoji Mizutani, Yasuji Taketsuna, Yuki Tojima, Atsushi Torii, Shigetaka Isogai
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Patent number: 7228928Abstract: An in-wheel motor includes a motor, a shaft, an oil pump and oil paths. The oil pump is provided on one end of the shaft. The motor includes a stator core, stator coils and a rotor. The oil pump pumps up an oil from an oil reservoir via an oil path to supply the pumped-up oil to another oil path. The another oil path supplies the oil from the oil pump to the outer periphery of the stator core of the motor from an opening end.Type: GrantFiled: August 19, 2004Date of Patent: June 12, 2007Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: RyĆ³ji Mizutani, Yasuji Taketsuna, Yuki Tojima, Atsushi Torii, Shigetaka Isogai
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Publication number: 20070068715Abstract: A wheel supporting apparatus includes dampers, ball joints, a knuckle, an upper arm and a lower arm. The dampers are attached to a case of an in-wheel motor in the top-bottom direction of the vehicle's body and are connected respectively to the ball joints. The upper arm and the lower arm have respective one-ends connected to respective dampers via the ball joints and respective other ends pivotably fixed to the vehicle's body. The knuckle is connected to the ball joints to rotatably support a wheel hub via hub bearings.Type: ApplicationFiled: September 24, 2004Publication date: March 29, 2007Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Ryoji Mizutani, Yuki Tojima, Shigetaka Isogai, Atsushi Torii, Junichiro Sakurai
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Publication number: 20060219449Abstract: A bearing for supporting rotation of either of a rotor and a planetary gear is supported by a wall disposed between a motor housing and a gear case room. The wall is provided with an opening allowing lubricating oil splashed by a gear to be splashed onto an upper portion of a stator. Some of the lubricating oil passes through an oil passage placed at a central portion of a shaft and through an oil passage provided at a planetary carrier, and is then splashed through the opening onto an outer periphery of a stator coil. Furthermore, the lubricating oil is also splashed by a pinion gear, and is similarly splashed through the opening onto the stator coil and an inner peripheral wall of the motor housing. Accordingly, the stator coil and the stator core are cooled.Type: ApplicationFiled: February 28, 2006Publication date: October 5, 2006Inventors: Ryoji Mizutani, Atsushi Torii, Yuki Tojima
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Publication number: 20060144626Abstract: An in-wheel motor includes a motor generating motive power, a planetary gear arranged toward a wheel disc relative to the motor to reduce an output of the motor, and a shaft arranged toward the wheel disc relative to the planetary gear and connected to a planetary carrier. Shaft is connected to a constant velocity joint transmitting the motive power to wheel disc.Type: ApplicationFiled: December 16, 2005Publication date: July 6, 2006Inventors: Ryoji Mizutani, Fumito Kurata, Shigekazu Yogo, Kenji Harada, Atsushi Torii, Yuki Tojima, Masafumi Sakuma
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Publication number: 20060043806Abstract: A stator includes a cylindrical-shaped stator core including multiple teeth projecting in a radial direction of the stator core, multiple coils wound around each of the multiple teeth, multiple bus rings arranged at an axially end portion of the stator core and each electrically connected to each of the multiple coils, multiple wire pulled-out portions formed on both ends of the coil and pulled out towards the bus ring, and multiple connection terminal portions integrally formed on the respective bus rings in such a manner that the connection terminal portions are arranged at respective predetermined intervals in a peripheral direction of the stator core and each extending towards each wire pulled-out portion. A tip end portion of the connection terminal portion is bent so as to form a substantially U-shape for pinching the wire pulled-out portion.Type: ApplicationFiled: August 29, 2005Publication date: March 2, 2006Inventors: Atsushi Torii, Junichiro Sakurai, Akinori Hoshino, Tokunari Nakamoto, Masafumi Sakuma, Yuki Tojima, Shunichiro Akimae, Masanao Fujita
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Publication number: 20050211478Abstract: A descent-restricting device for restricting a descent of a vehicle when starting the vehicle from a stationary state on an incline includes a motor for transmitting power to a drive shaft of the vehicle, a power source, a motor control portion for controlling electric power provided from the power source to the motor, and a short circuit switch portion for short-circuiting a plurality of wirings connecting the motor and the motor control portion when starting the vehicle from the stationary state on the incline.Type: ApplicationFiled: February 16, 2005Publication date: September 29, 2005Applicant: Aisin Seiki Kabshiki KaishaInventors: Masafumi Sakuma, Yuki Tojima
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Publication number: 20050045393Abstract: An in-wheel motor includes a motor, a shaft, an oil pump and oil paths. The oil pump is provided on one end of the shaft. The motor includes a stator core, stator coils and a rotor. The oil pump pumps up an oil from an oil reservoir via an oil path to supply the pumped-up oil to another oil path. The another oil path supplies the oil from the oil pump to the outer periphery of the stator core of the motor from an opening end.Type: ApplicationFiled: August 19, 2004Publication date: March 3, 2005Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Ryoji Mizutani, Yasuji Taketsuna, Yuki Tojima, Atsushi Torii, Shigetaka Isogai
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Patent number: 6455963Abstract: A frame for an electric motor is provided with a high heat discharge efficiency at low manufacturing cost wherein a plurality of cooling media paths, grooves, groove paths, media paths and communication paths are formed on the frame using a diecast process. A plurality of fins are formed in the grooves and a plurality of cooling media guide members are secured about the periphery of the frame to control the flow of the cooling media.Type: GrantFiled: December 20, 2000Date of Patent: September 24, 2002Assignee: Aisin Seiki Kabushiki KaishaInventors: Junichiro Sakurai, Masafumi Sakuma, Tetsuo Wakita, Yuki Tojima
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Publication number: 20010004172Abstract: A frame for an electric motor is provided with a high heat discharge efficiency at low manufacturing cost wherein a plurality of cooling media paths, grooves, groove paths, media paths and communication paths are formed on the frame using a diecast process. A plurality of fins are formed in the grooves and a plurality of cooling media guide members are secured about the periphery of the frame to control the flow of the cooling media.Type: ApplicationFiled: December 20, 2000Publication date: June 21, 2001Inventors: Junichiro Sakurai, Masafumi Sakuma, Tetsuo Wakita, Yuki Tojima
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Patent number: 6161672Abstract: A shift-locking device for a vehicle transmission includes a manual shaft mechanically connected with a shift lever for rotating to a first position, a second position and a third position through operation of the shift lever, and mechanically connected to a parking control mechanism disposed in the transmission case. A first shift-locking shaft is connected to a brake pedal for rotating from a first position to a second position, and a locked member is provided on the manual shaft. A first lock member provided on the first shift-locking shaft is adapted to engage the locked member when the first shift-locking shaft is in the first position. A spring urges the first shift-locking shaft to the second position to release engagement between the locked member and the first lock member.Type: GrantFiled: September 24, 1999Date of Patent: December 19, 2000Assignee: Aisin Seiki Kabushiki KaishaInventors: Hiroaki Maeda, Yuki Tojima, Shigeki Banno
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Patent number: 6074321Abstract: A transaxle assembly comprising, a planetary gear unit including a planetary gear set to shift receiving torque from a power source, a differential including a differential case, a cross pin having a pinion gear and a pair of output members, each output member having a differential side gear to engage with the pinion gear respectively, the differential transmitting the torque from the planetary gear unit to the output members via a circled carrier connecting between the planetary gear unit and the differential, wherein the planetary gears located outside of the differential case, the carrier supporting both ends of the cross pin and contacting with the differential case.Type: GrantFiled: September 30, 1998Date of Patent: June 13, 2000Assignee: Aisin Seiki Kabushiki KaishaInventors: Hiroaki Maeda, Yuki Tojima
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Patent number: 5720375Abstract: A coupling device includes an input member, an output shaft coaxial with the input member, and a clutch mechanism that includes a plate disposed at the side of the input member and a disc disposed at the side of the output shaft. The clutch mechanism transmits rotational torque of the input member by frictional engagement between the plate and the disc. A disc supporting member is disposed between the clutch mechanism and the output shaft, and supports the disc. An actuator is adapted to engage the plate with the disc, and a transforming device moves the disc supporting member so as to engage the disc with the plate when the rotational torque of the disc supporting member differs from the rotational torque of the output shaft.Type: GrantFiled: March 29, 1996Date of Patent: February 24, 1998Assignee: Aisin Seiki Kabushiki KaishaInventors: Hiroaki Maeda, Yuki Tojima